156402987450 has 24 divisors (see below), whose sum is σ = 387879409248. Its totient is φ = 41707463280.

The previous prime is 156402987407. The next prime is 156402987463. The reversal of 156402987450 is 54789204651.

It is a junction number, because it is equal to n+sod(n) for n = 156402987393 and 156402987402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 521343142 + ... + 521343441.

It is an arithmetic number, because the mean of its divisors is an integer number (16161642052).

Almost surely, 2^156402987450 is an apocalyptic number.

156402987450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

156402987450 is an abundant number, since it is smaller than the sum of its proper divisors (231476421798).

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

156402987450 is a wasteful number, since it uses less digits than its factorization.

156402987450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1042686598 (or 1042686593 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 51.

The spelling of 156402987450 in words is "one hundred fifty-six billion, four hundred two million, nine hundred eighty-seven thousand, four hundred fifty".