67400667400340 has 48 divisors (see below), whose sum is σ = 142088212869120. Its totient is φ = 26856141540480.

The previous prime is 67400667400327. The next prime is 67400667400373. The reversal of 67400667400340 is 4300476600476.

It is a happy number.

It is a super-2 number, since 2×67400667400340² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36274799 + ... + 38087561.

It is an arithmetic number, because the mean of its divisors is an integer number (2960171101440).

Almost surely, 2^{67400667400340} is an apocalyptic number.

It is an amenable number.

67400667400340 is an abundant number, since it is smaller than the sum of its proper divisors (74687545468780).

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

67400667400340 is a wasteful number, since it uses less digits than its factorization.

67400667400340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1819952 (or 1819950 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 47.

The spelling of 67400667400340 in words is "sixty-seven trillion, four hundred billion, six hundred sixty-seven million, four hundred thousand, three hundred forty".