23526779420 has 24 divisors (see below), whose sum is σ = 49417743984. Its totient is φ = 9408519936.

The previous prime is 23526779389. The next prime is 23526779477. The reversal of 23526779420 is 2497762532.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47549 + ... + 222068.

It is an arithmetic number, because the mean of its divisors is an integer number (2059072666).

Almost surely, 2^23526779420 is an apocalyptic number.

23526779420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23526779420 is an abundant number, since it is smaller than the sum of its proper divisors (25890964564).

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

23526779420 is a wasteful number, since it uses less digits than its factorization.

23526779420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273989 (or 273987 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 47.

The spelling of 23526779420 in words is "twenty-three billion, five hundred twenty-six million, seven hundred seventy-nine thousand, four hundred twenty".