68261525919 has 6 divisors (see below), whose sum is σ = 98599981896. Its totient is φ = 45507683940.

The previous prime is 68261525837. The next prime is 68261525933. The reversal of 68261525919 is 91952516286.

68261525919 is a `hidden beast` number, since 6 + 8 + 2 + 615 + 2 + 5 + 9 + 19 = 666.

It is not a de Polignac number, because 68261525919 - 2¹⁷ = 68261394847 is a prime.

It is a super-2 number, since 2×68261525919² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68261525939) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3792306987 + ... + 3792307004.

It is an arithmetic number, because the mean of its divisors is an integer number (16433330316).

Almost surely, 2^68261525919 is an apocalyptic number.

68261525919 is a deficient number, since it is larger than the sum of its proper divisors (30338455977).

68261525919 is a wasteful number, since it uses less digits than its factorization.

68261525919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7584613997 (or 7584613994 counting only the distinct ones).

The product of its digits is 2332800, while the sum is 54.

The spelling of 68261525919 in words is "sixty-eight billion, two hundred sixty-one million, five hundred twenty-five thousand, nine hundred nineteen".