158899748774442 has 32 divisors (see below), whose sum is σ = 342256052255040. Its totient is φ = 48890739033600.

The previous prime is 158899748774387. The next prime is 158899748774449. The reversal of 158899748774442 is 244477847998851.

It is a super-2 number, since 2×158899748774442² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (158899748774449) 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, 28495092 + ... + 33612047.

It is an arithmetic number, because the mean of its divisors is an integer number (10695501632970).

Almost surely, 2^{158899748774442} is an apocalyptic number.

158899748774442 is an abundant number, since it is smaller than the sum of its proper divisors (183356303480598).

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

158899748774442 is a wasteful number, since it uses less digits than its factorization.

158899748774442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62139958.

The product of its digits is 36415733760, while the sum is 87.

The spelling of 158899748774442 in words is "one hundred fifty-eight trillion, eight hundred ninety-nine billion, seven hundred forty-eight million, seven hundred seventy-four thousand, four hundred forty-two".