1620620411042 has 16 divisors (see below), whose sum is σ = 2488816868472. Its totient is φ = 791208712320.

The previous prime is 1620620411017. The next prime is 1620620411063. The reversal of 1620620411042 is 2401140260261.

It can be written as a sum of positive squares in 4 ways, for example, as 1401550544641 + 219069866401 = 1183871^2 + 468049^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1620620410996 and 1620620411014.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48464213 + ... + 48497640.

Almost surely, 2^{1620620411042} is an apocalyptic number.

1620620411042 is a deficient number, since it is larger than the sum of its proper divisors (868196457430).

1620620411042 is a wasteful number, since it uses less digits than its factorization.

1620620411042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96962053.

The product of its (nonzero) digits is 4608, while the sum is 29.

The spelling of 1620620411042 in words is "one trillion, six hundred twenty billion, six hundred twenty million, four hundred eleven thousand, forty-two".