29686945401 has 27 divisors (see below), whose sum is σ = 43490635461. Its totient is φ = 19513895544.

The previous prime is 29686945391. The next prime is 29686945429. The reversal of 29686945401 is 10454968692.

The square root of 29686945401 is 172299.

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

29686945401 is a `hidden beast` number, since 2 + 9 + 6 + 8 + 6 + 94 + 540 + 1 = 666.

It is not a de Polignac number, because 29686945401 - 2¹³ = 29686937209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (29686945801) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 40834500 + ... + 40835226.

Almost surely, 2^29686945401 is an apocalyptic number.

29686945401 is the 172299-th square number.

29686945401 is the 86150-th centered octagonal number.

It is an amenable number.

29686945401 is a deficient number, since it is larger than the sum of its proper divisors (13803690060).

29686945401 is an frugal number, since it uses more digits than its factorization.

29686945401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1618 (or 809 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 54.

The spelling of 29686945401 in words is "twenty-nine billion, six hundred eighty-six million, nine hundred forty-five thousand, four hundred one".