1206726664157 has 16 divisors (see below), whose sum is σ = 1460300752512. Its totient is φ = 973453724160.

The previous prime is 1206726664147. The next prime is 1206726664159. The reversal of 1206726664157 is 7514666276021.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1206726664157 - 2³² = 1202431696861 is a prime.

It is a super-3 number, since 3×1206726664157³ (a number of 37 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1206726664099 and 1206726664108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1206726664159) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2887982 + ... + 3279312.

It is an arithmetic number, because the mean of its divisors is an integer number (91268797032).

Almost surely, 2^{1206726664157} is an apocalyptic number.

1206726664157 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1206726664157 is a deficient number, since it is larger than the sum of its proper divisors (253574088355).

1206726664157 is a wasteful number, since it uses less digits than its factorization.

1206726664157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417268.

The product of its (nonzero) digits is 5080320, while the sum is 53.

The spelling of 1206726664157 in words is "one trillion, two hundred six billion, seven hundred twenty-six million, six hundred sixty-four thousand, one hundred fifty-seven".