156443476820 has 48 divisors (see below), whose sum is σ = 347924762640. Its totient is φ = 58884839424.

The previous prime is 156443476799. The next prime is 156443476949. The reversal of 156443476820 is 28674344651.

It can be written as a sum of positive squares in 8 ways, for example, as 26323115536 + 130120361284 = 162244^2 + 360722^2 .

It is a super-2 number, since 2×156443476820² (a number of 23 digits) contains 22 as substring.

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, 1806266 + ... + 1890894.

It is an arithmetic number, because the mean of its divisors is an integer number (7248432555).

Almost surely, 2^156443476820 is an apocalyptic number.

156443476820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

156443476820 is an abundant number, since it is smaller than the sum of its proper divisors (191481285820).

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

156443476820 is a wasteful number, since it uses less digits than its factorization.

156443476820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90092 (or 90090 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 50.

The spelling of 156443476820 in words is "one hundred fifty-six billion, four hundred forty-three million, four hundred seventy-six thousand, eight hundred twenty".