15212561023 has 8 divisors (see below), whose sum is σ = 16596988416. Its totient is φ = 13828378200.

The previous prime is 15212561011. The next prime is 15212561029. The reversal of 15212561023 is 32016521251.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 15212561023 - 2⁵ = 15212560991 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15212560982 and 15212561000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15212561029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83890 + ... + 193552.

It is an arithmetic number, because the mean of its divisors is an integer number (2074623552).

Almost surely, 2^15212561023 is an apocalyptic number.

15212561023 is a deficient number, since it is larger than the sum of its proper divisors (1384427393).

15212561023 is a wasteful number, since it uses less digits than its factorization.

15212561023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122285.

The product of its (nonzero) digits is 3600, while the sum is 28.

The spelling of 15212561023 in words is "fifteen billion, two hundred twelve million, five hundred sixty-one thousand, twenty-three".