120646643734 has 4 divisors (see below), whose sum is σ = 180969965604. Its totient is φ = 60323321866.

The previous prime is 120646643723. The next prime is 120646643753. The reversal of 120646643734 is 437346646021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 437346646021 = 15761 ⋅27748661.

It is a super-2 number, since 2×120646643734² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30161660932 + ... + 30161660935.

It is an arithmetic number, because the mean of its divisors is an integer number (45242491401).

Almost surely, 2^120646643734 is an apocalyptic number.

120646643734 is a deficient number, since it is larger than the sum of its proper divisors (60323321870).

120646643734 is an equidigital number, since it uses as much as digits as its factorization.

120646643734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60323321869.

The product of its (nonzero) digits is 1741824, while the sum is 46.

The spelling of 120646643734 in words is "one hundred twenty billion, six hundred forty-six million, six hundred forty-three thousand, seven hundred thirty-four".