7138400467684 has 6 divisors (see below), whose sum is σ = 12492200818454. Its totient is φ = 3569200233840.

The previous prime is 7138400467663. The next prime is 7138400467691. The reversal of 7138400467684 is 4867640048317.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 7136762646784 + 1637820900 = 2671472^2 + 40470^2 .

It is a super-2 number, since 2×7138400467684² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 892300058457 + ... + 892300058464.

Almost surely, 2^{7138400467684} is an apocalyptic number.

It is an amenable number.

7138400467684 is a deficient number, since it is larger than the sum of its proper divisors (5353800350770).

7138400467684 is a wasteful number, since it uses less digits than its factorization.

7138400467684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1784600116925 (or 1784600116923 counting only the distinct ones).

The product of its (nonzero) digits is 21676032, while the sum is 58.

The spelling of 7138400467684 in words is "seven trillion, one hundred thirty-eight billion, four hundred million, four hundred sixty-seven thousand, six hundred eighty-four".