2011772140651 has 24 divisors (see below), whose sum is σ = 2524162041744. Its totient is φ = 1589256002880.

The previous prime is 2011772140633. The next prime is 2011772140657. The reversal of 2011772140651 is 1560412771102.

It is not a de Polignac number, because 2011772140651 - 2¹³ = 2011772132459 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2011772140651.

It is not an unprimeable number, because it can be changed into a prime (2011772140657) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2046240 + ... + 2865421.

It is an arithmetic number, because the mean of its divisors is an integer number (105173418406).

Almost surely, 2^{2011772140651} is an apocalyptic number.

2011772140651 is a deficient number, since it is larger than the sum of its proper divisors (512389901093).

2011772140651 is a wasteful number, since it uses less digits than its factorization.

2011772140651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4912331 (or 4912324 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 37.

The spelling of 2011772140651 in words is "two trillion, eleven billion, seven hundred seventy-two million, one hundred forty thousand, six hundred fifty-one".