158777751261 has 16 divisors (see below), whose sum is σ = 214892406464. Its totient is φ = 104257891584.

The previous prime is 158777751241. The next prime is 158777751277. The reversal of 158777751261 is 162157777851.

It is not a de Polignac number, because 158777751261 - 2¹¹ = 158777749213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158777751221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1562151 + ... + 1660683.

It is an arithmetic number, because the mean of its divisors is an integer number (13430775404).

Almost surely, 2^158777751261 is an apocalyptic number.

It is an amenable number.

158777751261 is a deficient number, since it is larger than the sum of its proper divisors (56114655203).

158777751261 is an equidigital number, since it uses as much as digits as its factorization.

158777751261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106620.

The product of its digits is 5762400, while the sum is 57.

The spelling of 158777751261 in words is "one hundred fifty-eight billion, seven hundred seventy-seven million, seven hundred fifty-one thousand, two hundred sixty-one".