71906078437 has 8 divisors (see below), whose sum is σ = 72572544000. Its totient is φ = 71239736304.

The previous prime is 71906078399. The next prime is 71906078449. The reversal of 71906078437 is 73487060917.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71906078437 - 2¹⁵ = 71906045669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71906078537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1480188 + ... + 1527994.

It is an arithmetic number, because the mean of its divisors is an integer number (9071568000).

Almost surely, 2^71906078437 is an apocalyptic number.

It is an amenable number.

71906078437 is a deficient number, since it is larger than the sum of its proper divisors (666465563).

71906078437 is a wasteful number, since it uses less digits than its factorization.

71906078437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61715.

The product of its (nonzero) digits is 1778112, while the sum is 52.

The spelling of 71906078437 in words is "seventy-one billion, nine hundred six million, seventy-eight thousand, four hundred thirty-seven".