64196770403 has 4 divisors (see below), whose sum is σ = 64918082520. Its totient is φ = 63475458288.

The previous prime is 64196770399. The next prime is 64196770409. The reversal of 64196770403 is 30407769146.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 64196770403 - 2² = 64196770399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64196770409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 360655925 + ... + 360656102.

It is an arithmetic number, because the mean of its divisors is an integer number (16229520630).

Almost surely, 2^64196770403 is an apocalyptic number.

64196770403 is a deficient number, since it is larger than the sum of its proper divisors (721312117).

64196770403 is an equidigital number, since it uses as much as digits as its factorization.

64196770403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721312116.

The product of its (nonzero) digits is 762048, while the sum is 47.

The spelling of 64196770403 in words is "sixty-four billion, one hundred ninety-six million, seven hundred seventy thousand, four hundred three".