71890211542 has 16 divisors (see below), whose sum is σ = 111344781312. Its totient is φ = 34775928360.

The previous prime is 71890211537. The next prime is 71890211563. The reversal of 71890211542 is 24511209817.

It is a junction number, because it is equal to n+sod(n) for n = 71890211495 and 71890211504.

It is a congruent number.

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, 66723 + ... + 385009.

It is an arithmetic number, because the mean of its divisors is an integer number (6959048832).

Almost surely, 2^71890211542 is an apocalyptic number.

71890211542 is a deficient number, since it is larger than the sum of its proper divisors (39454569770).

71890211542 is a wasteful number, since it uses less digits than its factorization.

71890211542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321963.

The product of its (nonzero) digits is 40320, while the sum is 40.

The spelling of 71890211542 in words is "seventy-one billion, eight hundred ninety million, two hundred eleven thousand, five hundred forty-two".