158458928761 has 81 divisors (see below), whose sum is σ = 202171566573. Its totient is φ = 123815381760.

The previous prime is 158458928759. The next prime is 158458928773. The reversal of 158458928761 is 167829854851.

The square root of 158458928761 is 398069.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 35919725625 + 122539203136 = 189525^2 + 350056^2 .

It is not a de Polignac number, because 158458928761 - 2¹ = 158458928759 is a prime.

It is a Smith number, since the sum of its digits (64) coincides with the sum of the digits of its prime factors.

Its product of digits (38707200) is a multiple of the sum of its prime divisors (140).

It is a junction number, because it is equal to n+sod(n) for n = 158458928693 and 158458928702.

It is not an unprimeable number, because it can be changed into a prime (158458928711) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 2170670221 + ... + 2170670293.

Almost surely, 2^158458928761 is an apocalyptic number.

158458928761 is the 398069-th square number.

158458928761 is the 199035-th centered octagonal number.

It is an amenable number.

158458928761 is a deficient number, since it is larger than the sum of its proper divisors (43712637812).

158458928761 is an frugal number, since it uses more digits than its factorization.

158458928761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280 (or 140 counting only the distinct ones).

The product of its digits is 38707200, while the sum is 64.

Multiplying 158458928761 by its sum of digits (64), we get a square (10141371440704 = 3184552²).

The spelling of 158458928761 in words is "one hundred fifty-eight billion, four hundred fifty-eight million, nine hundred twenty-eight thousand, seven hundred sixty-one".