71903421954 has 64 divisors (see below), whose sum is σ = 196658945280. Its totient is φ = 18963538560.

The previous prime is 71903421949. The next prime is 71903422039. The reversal of 71903421954 is 45912430917.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7311267 + ... + 7321094.

It is an arithmetic number, because the mean of its divisors is an integer number (3072796020).

Almost surely, 2^71903421954 is an apocalyptic number.

71903421954 is an abundant number, since it is smaller than the sum of its proper divisors (124755523326).

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

71903421954 is a wasteful number, since it uses less digits than its factorization.

71903421954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14632392 (or 14632386 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The spelling of 71903421954 in words is "seventy-one billion, nine hundred three million, four hundred twenty-one thousand, nine hundred fifty-four".