648772402046 has 4 divisors (see below), whose sum is σ = 973158603072. Its totient is φ = 324386201022.

The previous prime is 648772402027. The next prime is 648772402049. The reversal of 648772402046 is 640204277846.

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

It is a super-2 number, since 2×648772402046² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 648772401985 and 648772402003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648772402049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162193100510 + ... + 162193100513.

It is an arithmetic number, because the mean of its divisors is an integer number (243289650768).

Almost surely, 2^648772402046 is an apocalyptic number.

648772402046 is a deficient number, since it is larger than the sum of its proper divisors (324386201026).

648772402046 is a wasteful number, since it uses less digits than its factorization.

648772402046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324386201025.

The product of its (nonzero) digits is 3612672, while the sum is 50.

The spelling of 648772402046 in words is "six hundred forty-eight billion, seven hundred seventy-two million, four hundred two thousand, forty-six".