155405063632 has 80 divisors (see below), whose sum is σ = 372444217600. Its totient is φ = 61169872896.

The previous prime is 155405063617. The next prime is 155405063641. The reversal of 155405063632 is 236360504551.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21568 + ... + 557920.

It is an arithmetic number, because the mean of its divisors is an integer number (4655552720).

Almost surely, 2^155405063632 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155405063632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (186222108800).

155405063632 is an abundant number, since it is smaller than the sum of its proper divisors (217039153968).

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

155405063632 is a wasteful number, since it uses less digits than its factorization.

155405063632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536580 (or 536574 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 40.

The spelling of 155405063632 in words is "one hundred fifty-five billion, four hundred five million, sixty-three thousand, six hundred thirty-two".