34078353991 has 16 divisors (see below), whose sum is σ = 37697230368. Its totient is φ = 30546547200.

The previous prime is 34078353979. The next prime is 34078353997. The reversal of 34078353991 is 19935387043.

It is a cyclic number.

It is not a de Polignac number, because 34078353991 - 2⁷ = 34078353863 is a prime.

It is a super-2 number, since 2×34078353991² (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 (34078353997) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5037051 + ... + 5043811.

It is an arithmetic number, because the mean of its divisors is an integer number (2356076898).

Almost surely, 2^34078353991 is an apocalyptic number.

34078353991 is a deficient number, since it is larger than the sum of its proper divisors (3618876377).

34078353991 is a wasteful number, since it uses less digits than its factorization.

34078353991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13122.

The product of its (nonzero) digits is 2449440, while the sum is 52.

The spelling of 34078353991 in words is "thirty-four billion, seventy-eight million, three hundred fifty-three thousand, nine hundred ninety-one".