1573406978690 has 32 divisors (see below), whose sum is σ = 2859288284160. Its totient is φ = 623332926144.

The previous prime is 1573406978629. The next prime is 1573406978707. The reversal of 1573406978690 is 968796043751.

It is a super-2 number, since 2×1573406978690² (a number of 25 digits) contains 22 as substring.

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, 2372279 + ... + 2962181.

It is an arithmetic number, because the mean of its divisors is an integer number (89352758880).

Almost surely, 2^{1573406978690} is an apocalyptic number.

1573406978690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1573406978690 is a deficient number, since it is larger than the sum of its proper divisors (1285881305470).

1573406978690 is a wasteful number, since it uses less digits than its factorization.

1573406978690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 592466.

The product of its (nonzero) digits is 68584320, while the sum is 65.

The spelling of 1573406978690 in words is "one trillion, five hundred seventy-three billion, four hundred six million, nine hundred seventy-eight thousand, six hundred ninety".