23151342540 has 24 divisors (see below), whose sum is σ = 64823759280. Its totient is φ = 6173691328.

The previous prime is 23151342521. The next prime is 23151342559. The reversal of 23151342540 is 4524315132.

It is an interprime number because it is at equal distance from previous prime (23151342521) and next prime (23151342559).

It is a super-2 number, since 2×23151342540² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 23151342498 and 23151342507.

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, 192927795 + ... + 192927914.

It is an arithmetic number, because the mean of its divisors is an integer number (2700989970).

Almost surely, 2^23151342540 is an apocalyptic number.

23151342540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23151342540 is an abundant number, since it is smaller than the sum of its proper divisors (41672416740).

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

23151342540 is a wasteful number, since it uses less digits than its factorization.

23151342540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385855721 (or 385855719 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 23151342540 its reverse (4524315132), we get a palindrome (27675657672).

The spelling of 23151342540 in words is "twenty-three billion, one hundred fifty-one million, three hundred forty-two thousand, five hundred forty".