155406246165636 has 24 divisors (see below), whose sum is σ = 364333126877664. Its totient is φ = 51556574556480.

The previous prime is 155406246165631. The next prime is 155406246165637. The reversal of 155406246165636 is 636561642604551.

It is a happy number.

It is a super-2 number, since 2×155406246165636² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 155406246165636.

It is not an unprimeable number, because it can be changed into a prime (155406246165631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30688434705 + ... + 30688439768.

It is an arithmetic number, because the mean of its divisors is an integer number (15180546953236).

Almost surely, 2^{155406246165636} is an apocalyptic number.

It is an amenable number.

155406246165636 is an abundant number, since it is smaller than the sum of its proper divisors (208926880712028).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155406246165636 is a wasteful number, since it uses less digits than its factorization.

155406246165636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61376874691 (or 61376874689 counting only the distinct ones).

The product of its (nonzero) digits is 93312000, while the sum is 60.

The spelling of 155406246165636 in words is "one hundred fifty-five trillion, four hundred six billion, two hundred forty-six million, one hundred sixty-five thousand, six hundred thirty-six".