20151535412 has 12 divisors (see below), whose sum is σ = 37339609860. Its totient is φ = 9483075456.

The previous prime is 20151535387. The next prime is 20151535421. The reversal of 20151535412 is 21453515102.

It can be written as a sum of positive squares in 2 ways, for example, as 18627882256 + 1523653156 = 136484^2 + 39034^2 .

It is a super-2 number, since 2×20151535412² (a number of 21 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 3 ways as a sum of consecutive naturals, for example, 148172987 + ... + 148173122.

It is an arithmetic number, because the mean of its divisors is an integer number (3111634155).

Almost surely, 2^20151535412 is an apocalyptic number.

It is an amenable number.

20151535412 is a deficient number, since it is larger than the sum of its proper divisors (17188074448).

20151535412 is a wasteful number, since it uses less digits than its factorization.

20151535412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296346130 (or 296346128 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 29.

The spelling of 20151535412 in words is "twenty billion, one hundred fifty-one million, five hundred thirty-five thousand, four hundred twelve".