155542313616 has 40 divisors (see below), whose sum is σ = 410366961024. Its totient is φ = 50744300160.

The previous prime is 155542313611. The next prime is 155542313617. The reversal of 155542313616 is 616313245551.

It is a happy number.

It is a super-2 number, since 2×155542313616² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (155542313611) 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, 34470775 + ... + 34475286.

Almost surely, 2^155542313616 is an apocalyptic number.

155542313616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

155542313616 is an abundant number, since it is smaller than the sum of its proper divisors (254824647408).

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

155542313616 is a wasteful number, since it uses less digits than its factorization.

155542313616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68946119 (or 68946113 counting only the distinct ones).

The product of its digits is 324000, while the sum is 42.

The spelling of 155542313616 in words is "one hundred fifty-five billion, five hundred forty-two million, three hundred thirteen thousand, six hundred sixteen".