61420522215 has 64 divisors (see below), whose sum is σ = 112380912000. Its totient is φ = 28377022464.

The previous prime is 61420522213. The next prime is 61420522243. The reversal of 61420522215 is 51222502416.

It is not a de Polignac number, because 61420522215 - 2¹ = 61420522213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61420522213) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1130391 + ... + 1183479.

It is an arithmetic number, because the mean of its divisors is an integer number (1755951750).

Almost surely, 2^61420522215 is an apocalyptic number.

61420522215 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

61420522215 is a deficient number, since it is larger than the sum of its proper divisors (50960389785).

61420522215 is a wasteful number, since it uses less digits than its factorization.

61420522215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53476.

The product of its (nonzero) digits is 9600, while the sum is 30.

The spelling of 61420522215 in words is "sixty-one billion, four hundred twenty million, five hundred twenty-two thousand, two hundred fifteen".