1955276640672 has 24 divisors (see below), whose sum is σ = 5132601182016. Its totient is φ = 651758880192.

The previous prime is 1955276640671. The next prime is 1955276640697. The reversal of 1955276640672 is 2760466725591.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-3 number, since 3×1955276640672³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (1955276640671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10183732408 + ... + 10183732599.

It is an arithmetic number, because the mean of its divisors is an integer number (213858382584).

Almost surely, 2^{1955276640672} is an apocalyptic number.

1955276640672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1955276640672 is an abundant number, since it is smaller than the sum of its proper divisors (3177324541344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1955276640672 is a wasteful number, since it uses less digits than its factorization.

1955276640672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20367465020 (or 20367465012 counting only the distinct ones).

The product of its (nonzero) digits is 38102400, while the sum is 60.

The spelling of 1955276640672 in words is "one trillion, nine hundred fifty-five billion, two hundred seventy-six million, six hundred forty thousand, six hundred seventy-two".