23650631540 has 24 divisors (see below), whose sum is σ = 52587875592. Its totient is φ = 8903767040.

The previous prime is 23650631533. The next prime is 23650631561. The reversal of 23650631540 is 4513605632.

It can be written as a sum of positive squares in 4 ways, for example, as 5334257296 + 18316374244 = 73036^2 + 135338^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 23650631540.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34780001 + ... + 34780680.

It is an arithmetic number, because the mean of its divisors is an integer number (2191161483).

Almost surely, 2^23650631540 is an apocalyptic number.

23650631540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23650631540 is an abundant number, since it is smaller than the sum of its proper divisors (28937244052).

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

23650631540 is a wasteful number, since it uses less digits than its factorization.

23650631540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69560707 (or 69560705 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 35.

The spelling of 23650631540 in words is "twenty-three billion, six hundred fifty million, six hundred thirty-one thousand, five hundred forty".