1397771172534 has 64 divisors (see below), whose sum is σ = 3130772198400. Its totient is φ = 412368757920.

The previous prime is 1397771172527. The next prime is 1397771172607. The reversal of 1397771172534 is 4352711777931.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 69117 + ... + 1673415.

It is an arithmetic number, because the mean of its divisors is an integer number (48918315600).

Almost surely, 2^{1397771172534} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1397771172534, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1565386099200).

1397771172534 is an abundant number, since it is smaller than the sum of its proper divisors (1733001025866).

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

1397771172534 is a wasteful number, since it uses less digits than its factorization.

1397771172534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1604665.

The product of its digits is 7779240, while the sum is 57.

The spelling of 1397771172534 in words is "one trillion, three hundred ninety-seven billion, seven hundred seventy-one million, one hundred seventy-two thousand, five hundred thirty-four".