23515211537642 has 32 divisors (see below), whose sum is σ = 39255062482944. Its totient is φ = 10475083956400.

The previous prime is 23515211537591. The next prime is 23515211537693. The reversal of 23515211537642 is 24673511251532.

It is an interprime number because it is at equal distance from previous prime (23515211537591) and next prime (23515211537693).

It is a super-3 number, since 3×23515211537642³ (a number of 41 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44812658 + ... + 45334365.

It is an arithmetic number, because the mean of its divisors is an integer number (1226720702592).

Almost surely, 2^{23515211537642} is an apocalyptic number.

23515211537642 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

23515211537642 is a deficient number, since it is larger than the sum of its proper divisors (15739850945302).

23515211537642 is a wasteful number, since it uses less digits than its factorization.

23515211537642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90147274.

The product of its digits is 1512000, while the sum is 47.

The spelling of 23515211537642 in words is "twenty-three trillion, five hundred fifteen billion, two hundred eleven million, five hundred thirty-seven thousand, six hundred forty-two".