402150642536 has 8 divisors (see below), whose sum is σ = 754032454770. Its totient is φ = 201075321264.

The previous prime is 402150642511. The next prime is 402150642541. The reversal of 402150642536 is 635246051204.

It can be written as a sum of positive squares in only one way, i.e., 272410924900 + 129739717636 = 521930^2 + 360194^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×402150642536² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 402150642536.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25134415151 + ... + 25134415166.

Almost surely, 2^402150642536 is an apocalyptic number.

It is an amenable number.

402150642536 is a deficient number, since it is larger than the sum of its proper divisors (351881812234).

402150642536 is a wasteful number, since it uses less digits than its factorization.

402150642536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50268830323 (or 50268830319 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 38.

The spelling of 402150642536 in words is "four hundred two billion, one hundred fifty million, six hundred forty-two thousand, five hundred thirty-six".