651553225442 has 32 divisors (see below), whose sum is σ = 1156021432320. Its totient is φ = 269516373840.

The previous prime is 651553225409. The next prime is 651553225459. The reversal of 651553225442 is 244522355156.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 651553225393 and 651553225402.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1816088 + ... + 2145059.

It is an arithmetic number, because the mean of its divisors is an integer number (36125669760).

Almost surely, 2^651553225442 is an apocalyptic number.

651553225442 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

651553225442 is a deficient number, since it is larger than the sum of its proper divisors (504468206878).

651553225442 is a wasteful number, since it uses less digits than its factorization.

651553225442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3961566.

The product of its digits is 1440000, while the sum is 44.

The spelling of 651553225442 in words is "six hundred fifty-one billion, five hundred fifty-three million, two hundred twenty-five thousand, four hundred forty-two".