67440147690 has 16 divisors (see below), whose sum is σ = 161856354528. Its totient is φ = 17984039376.

The previous prime is 67440147679. The next prime is 67440147703. The reversal of 67440147690 is 9674104476.

It is a super-2 number, since 2×67440147690² (a number of 22 digits) contains 22 as substring.

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, 1124002432 + ... + 1124002491.

It is an arithmetic number, because the mean of its divisors is an integer number (10116022158).

Almost surely, 2^67440147690 is an apocalyptic number.

67440147690 is an abundant number, since it is smaller than the sum of its proper divisors (94416206838).

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

67440147690 is a wasteful number, since it uses less digits than its factorization.

67440147690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2248004933.

The product of its (nonzero) digits is 1016064, while the sum is 48.

The spelling of 67440147690 in words is "sixty-seven billion, four hundred forty million, one hundred forty-seven thousand, six hundred ninety".