35133378721 has 9 divisors (see below), whose sum is σ = 40870966899. Its totient is φ = 30113199984.

The previous prime is 35133378713. The next prime is 35133378733. The reversal of 35133378721 is 12787333153.

The square root of 35133378721 is 187439.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 5112965025 + 30020413696 = 71505^2 + 173264^2 .

It is not a de Polignac number, because 35133378721 - 2³ = 35133378713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (35133378701) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1298685 + ... + 1325461.

Almost surely, 2^35133378721 is an apocalyptic number.

35133378721 is the 187439-th square number.

35133378721 is the 93720-th centered octagonal number.

It is an amenable number.

35133378721 is a deficient number, since it is larger than the sum of its proper divisors (5737588178).

35133378721 is an frugal number, since it uses more digits than its factorization.

35133378721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53568 (or 26784 counting only the distinct ones).

The product of its digits is 317520, while the sum is 43.

The spelling of 35133378721 in words is "thirty-five billion, one hundred thirty-three million, three hundred seventy-eight thousand, seven hundred twenty-one".