82351940402 has 4 divisors (see below), whose sum is σ = 123527910606. Its totient is φ = 41175970200.

The previous prime is 82351940387. The next prime is 82351940453. The reversal of 82351940402 is 20404915328.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 74212111561 + 8139828841 = 272419^2 + 90221^2 .

It is a super-3 number, since 3×82351940402³ (a number of 34 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20587985099 + ... + 20587985102.

Almost surely, 2^82351940402 is an apocalyptic number.

82351940402 is a deficient number, since it is larger than the sum of its proper divisors (41175970204).

82351940402 is a wasteful number, since it uses less digits than its factorization.

82351940402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41175970203.

The product of its (nonzero) digits is 69120, while the sum is 38.

The spelling of 82351940402 in words is "eighty-two billion, three hundred fifty-one million, nine hundred forty thousand, four hundred two".