2155462420220 has 12 divisors (see below), whose sum is σ = 4526471082504. Its totient is φ = 862184968080.

The previous prime is 2155462420211. The next prime is 2155462420229. The reversal of 2155462420220 is 220242645512.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2155462420211) and next prime (2155462420229).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2155462420229) 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, 53886560486 + ... + 53886560525.

It is an arithmetic number, because the mean of its divisors is an integer number (377205923542).

Almost surely, 2^{2155462420220} is an apocalyptic number.

2155462420220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2155462420220 is an abundant number, since it is smaller than the sum of its proper divisors (2371008662284).

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

2155462420220 is a wasteful number, since it uses less digits than its factorization.

2155462420220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107773121020 (or 107773121018 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 35.

The spelling of 2155462420220 in words is "two trillion, one hundred fifty-five billion, four hundred sixty-two million, four hundred twenty thousand, two hundred twenty".