71072523451 has 16 divisors (see below), whose sum is σ = 75771108000. Its totient is φ = 66473568000.

The previous prime is 71072523449. The next prime is 71072523461. The reversal of 71072523451 is 15432527017.

It is a cyclic number.

It is not a de Polignac number, because 71072523451 - 2¹ = 71072523449 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71072523451.

It is not an unprimeable number, because it can be changed into a prime (71072523461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 616671 + ... + 722791.

It is an arithmetic number, because the mean of its divisors is an integer number (4735694250).

Almost surely, 2^71072523451 is an apocalyptic number.

71072523451 is a deficient number, since it is larger than the sum of its proper divisors (4698584549).

71072523451 is a wasteful number, since it uses less digits than its factorization.

71072523451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106590.

The product of its (nonzero) digits is 58800, while the sum is 37.

The spelling of 71072523451 in words is "seventy-one billion, seventy-two million, five hundred twenty-three thousand, four hundred fifty-one".