53691021486 has 24 divisors (see below), whose sum is σ = 120341945880. Its totient is φ = 17279868816.

The previous prime is 53691021481. The next prime is 53691021581. The reversal of 53691021486 is 68412019635.

53691021486 is a `hidden beast` number, since 5 + 3 + 69 + 102 + 1 + 486 = 666.

53691021486 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×53691021486² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53691021481) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51427660 + ... + 51428703.

It is an arithmetic number, because the mean of its divisors is an integer number (5014247745).

Almost surely, 2^53691021486 is an apocalyptic number.

53691021486 is an abundant number, since it is smaller than the sum of its proper divisors (66650924394).

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

53691021486 is a wasteful number, since it uses less digits than its factorization.

53691021486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102856400 (or 102856397 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The spelling of 53691021486 in words is "fifty-three billion, six hundred ninety-one million, twenty-one thousand, four hundred eighty-six".