40356479655625 has 135 divisors (see below), whose sum is σ = 60668039554353. Its totient is φ = 26757467100000.

The previous prime is 40356479655607. The next prime is 40356479655697. The reversal of 40356479655625 is 52655697465304.

It is a happy number.

The square root of 40356479655625 is 6352675.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3163948005001 + 37192531650624 = 1778749^2 + 6098568^2 .

It is not a de Polignac number, because 40356479655625 - 2¹¹ = 40356479653577 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 34463261290 + ... + 34463262460.

Almost surely, 2^{40356479655625} is an apocalyptic number.

40356479655625 is the 6352675-th square number.

40356479655625 is the 3176338-th centered octagonal number.

It is an amenable number.

40356479655625 is a deficient number, since it is larger than the sum of its proper divisors (20311559898728).

40356479655625 is an frugal number, since it uses more digits than its factorization.

40356479655625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2438 (or 1214 counting only the distinct ones).

The product of its (nonzero) digits is 816480000, while the sum is 67.

The spelling of 40356479655625 in words is "forty trillion, three hundred fifty-six billion, four hundred seventy-nine million, six hundred fifty-five thousand, six hundred twenty-five".