155416226505631 has 16 divisors (see below), whose sum is σ = 191288317201408. Its totient is φ = 122962308357600.

The previous prime is 155416226505613. The next prime is 155416226505647. The reversal of 155416226505631 is 136505622614551.

It is a cyclic number.

It is not a de Polignac number, because 155416226505631 - 2¹⁵ = 155416226472863 is a prime.

It is a super-2 number, since 2×155416226505631² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155416226505431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27819165 + ... + 32935366.

It is an arithmetic number, because the mean of its divisors is an integer number (11955519825088).

Almost surely, 2^{155416226505631} is an apocalyptic number.

155416226505631 is a deficient number, since it is larger than the sum of its proper divisors (35872090695777).

155416226505631 is a wasteful number, since it uses less digits than its factorization.

155416226505631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60782662.

The product of its (nonzero) digits is 6480000, while the sum is 52.

The spelling of 155416226505631 in words is "one hundred fifty-five trillion, four hundred sixteen billion, two hundred twenty-six million, five hundred five thousand, six hundred thirty-one".